Spring-tooth harrow or cultivator



' gondel.) A 2 sheets-sheet 2.'

,H. SPRINGER 8L G. L. IVES.

Spring Tooth Harrow or `GultivotorI .Y No. 241,744. Patented May 1-7, |881.A

f o a/m .N MM N Y u 4 ATTORNEYS UNITED STATES PATENT OFFICE.

HENRY-SPRINGER AND GEORGE L. IVES, OF VIOKSBURG, MICHIGAN.

SPRING-TOOTH HARROW ORl CULTIVATOR.

SPECIFICATION forming part of Letters Patent No. 241,744, dated May 17, 1881.

Application filed October 30, 1880. (Model.)

'ures of reference marked thereon.

Figure l of the drawings is a plan view. Fig. 2 is a cross-section. Figs. 3, 4, and 5 are details. y

This invention relates to harrows or cultivators; and it consists in the construction hereinafter described.

In the annexed drawings, A represents the frame, consisting of cross-beam B, end beams, C G, and middle beam, D, the beams all being securely fastened.

E E E are rock-shafts running across the frame, the middle one, E', above and the other two, E E, below, one in front of, and the other behind,the shaft E. These shafts are hung in split boxes to said frame, the boxes F, at the endsof shaft E', being formed of one piece, e, at top and a lower piece, f, and side lia-nge, g, said lower piece, ft side flange, g, and the axlearm 7c all being in one piece. To these rockshafts E E E are securely attached the springteeth a, the shaft E being far enough above front shaft, E, to give the teeth of the latter plenty of room, and the teeth of shaft E' extended over and down behind rear shaft, E, between the teeth of the latter, the arrangementof theteeth on the shafts being such that the series are out of line. The portion of the shafts turning in the split boxes have grooves p, fitting-ribs t in said boxes, so as to prevent end play of saidshafts.

Attached to the top of shaft E is a clip, o,

having forked lugs d d, connected by looselypivoted arms G G to a lug, Z, upon a clip, m, secured to front shaft, E, and to a lever, H, made fast to a clip, a, upon rear shaft, E, said leverH extending upward and ending in a handle, h, and having a spring-catch, h', engaging a series of holes, p', arranged upon a sector-plate, I, fastened to the top of the rear end of middle beam, D, of frame A.

Attached ,to the under side of rock-shaft E', upon each side of middle beam, D, is a downwardly-projecting arm, K, to which arms are connected the arms p2 p2 of a bail, P, which extends up in front and to which the draft is applied.

M is the tongue, fastened by a bolt, r, in loop N, made adjustable by slots and set-screws, the rear end of said tongue having play in a socket, R, secured to the top of beam D.

In operation the pitch of the teeth is regulated by means of lever H, which is locked at any desired point by means of catch. h' and perforated sector-plate I. The draft at end of bail I? causes the teeth a to be set firmly and be held stoutly inthe ground.

What we claim is- 1. In a cultivator, the combination of three rock-shafts carrying the spring-teeth, the middle one arranged above the plane of the other two, and having its teeth extending over and back of the rear shaft.

2. `.The box F, having the top piece, e, and lower piece, f, side flange, g, and axle-arm K, the latter three parts made in one piece.

In testimony that we claim the above We have hereunto subscribed our names in the presence of two witnesses.

HENRY SPRINGER. GEORGE L. IVES. 

